Finally, a voice of reason.
--- On Sun, 6/7/09, dave wrote:
From: dave
Subject: Re: [Elecraft] Battery Charging with DC Power Supply
To: mzil...@verizon.net
Cc: Elecraft@mailman.qth.net, "Bill Miner"
Date: Sunday, June 7, 2009, 11:36 PM
I'm not quite sure what is meant by the term 'uncontrol
Since Astron has been mentioned in this thread, I'll use that as an example.
The SCR that is part of the crowbar is connected directly across the output
terminals of the supply. When used normally, the firing of the SCR shorts the
output and the supply goes into current limit, if still function
--- On Sun, 5/17/09, Brendan Minish wrote:
> From: Brendan Minish
> Subject: Re: [Elecraft] Tr: K3 Ref connector
> To: "David Pratt"
> Cc: elecraft@mailman.qth.net, "Dave G4AON"
> Date: Sunday, May 17, 2009, 6:44 AM
> On Sat, 2009-05-16 at 08:03 +0100,
> David Pratt wrote:
> > The connector
I guess I'm missing the reason for having such precision. How can it make sense
to have a precision standard for a receiver that changes the tuned frequency
when the DSP bandwidth is changed?
Wes N7WS
--- On Sat, 5/16/09, Craig wrote:
> From: Craig
> Subject: [Elecraft] Tr: K3 Ref connecto
Exactly.
> Writelog and N1MM are both more
> powerful software packages but how much
> power do you need for field day? We're not talking about
> dedicated CQ WW
> teams who get together and practice using software for
> three months
> prior. For the most part FJP's FD logger gets used by fol
Sold.
--- On Tue, 5/12/09, Wes Stewart wrote:
> From: Wes Stewart
> Subject: Re: [Elecraft] External speakers for K3?
> To: elecraft@mailman.qth.net
> Date: Tuesday, May 12, 2009, 10:20 AM
> I'm using a pair of Optimus Pro
> 7AV. These are heavy metal-cased units that
I'm using a pair of Optimus Pro 7AV. These are heavy metal-cased units that
look really nice with the K3. They look like the first ones in this link,
except they have a textured black finish.
http://www.angelfire.com/vt/audio/minimus.html
I have a spare pair for sale if anyone is interested.
Sorry Bill but I have no experience with the program keying the rig or using it
with the K3. I use it as a logging program and do my own keying. My rig was
and is until my K3 comes back from Aptos, a TS870. My usual logging program is
DXBase but the N3FJP is excellent for FD and does all of
Why don't you just use N3FJP's Field Day logger instead?
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ports -9.7 dBi or ~ -11.8 dBd. As a ratio this =
0.065. Dividing 50 by 0.065 we find that the allowable input power is ~765 W.
You write this stuff down in your station engineering notes justifying your
assumptions and operate in good faith.
Wes Stewart, N7WS
--- On Thu, 5/7/09, Guy, K
--- On Wed, 5/6/09, Joe Subich, W4TV wrote:
> From: Joe Subich, W4TV
> Subject: Re: [Elecraft] Driveway Distortion Demolition Derby
> To: "'Ron D'Eau Claire'" , elecraft@mailman.qth.net
> Date: Wednesday, May 6, 2009, 10:30 AM
> > Wes is quite right for the USA at least, and to make it
> eas
Bob writes:
> In this case, I think a reasonable analogy would be if one
> was to take a
> Lamborghini Countach off-road instead of a Jeep or other 4
> wheel drive
> vehicle. It just does not make any sense to do so.
How about if it's a Lamborghini LM series?
http://www.lambocars.com/archive/lm
--- On Wed, 5/6/09, Bruce Bowman, NM5B wrote:
> From: Bruce Bowman, NM5B
> Subject: Re: [Elecraft] Driveway Distortion Demolition Derby
> To: elecraft@mailman.qth.net
> Date: Wednesday, May 6, 2009, 12:15 AM
> Unrelated to the K3 performance complaint, what happened to
> the 50 watt
> PEP limi
--- On Tue, 5/5/09, rfenab...@gmail.com wrote among other
stuff:
"I am not having a dig at anyone here"
Of course you are.
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I started composing a message yesterday about this and got called away. Paul
has now sort of beaten me to it, but what I had written was:
"Seems to me that the radio ought to be smart enough to correct (at least
partially) these issues.
If the preamp needs disabling and/or the attenuator need
to get this right. :-)
You got the right answer (86 dB) but when using your slide rule you didn't keep
track of the decimal point. One volt is 20,000 * 50 uV.
Wes Stewart, N7WS
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#x27;s a photo of an amplifier I
built about 30 years ago that shows what I'm talking about (although for
*really* tight shielding twice as many screws would be called for):
http://k6mhe.com/n7ws/N7WS_8877_1.jpg
Wes Stewart, N7WS
ps. If you would like to own this, contact me off list.
ours (phones on) without fatigue.
Wes Stewart, N7WS
> If you really want great sounding ssb, turn off the AGC,
> turn on the AF
> Limiter and throttle RF/AF gain.
>
> 73,
> Barry N1EU
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Hom
It can certainly be used as a balanced 150-ohm transmission line, but I would
stay away from any applications where it operated at appreciable SWR.
In other words, both of the applications you propose.
Wes N7WS
> My
> extensive searching has not uncovered any transmitting
> applications for
My key, was made by J.H.Bunnell and given to me when I was a kid, by a guy who
had actually used it at W.U.
http://chss.montclair.edu/~pererat/1458.jpg (Mine is in much better shape)
What a marriage; a 20th Century ham keying a 21st Century radio with a 19t
What would also be nice is to have an option to map memories 0-9 to the KIO
Band Outputs.
This would allow for instance, selecting remote antenna matching networks
within "the same band." Seventy-five and 80-meters leaps to mind. Switching
directional antennas might be another possibility.
g to be a real pain to replace.
Ironically, after 10+ years of flawless operation my first failure occurs when
I buy what is supposed to be a replacement radio.
Too many functions, not enough buttons.
Wes Stewart N7WS
--- On Thu, 4/16/09, Ed K1EP wrote:
> Although a good addition for safety
I had something similar (or perhaps the same) happen to me a few days ago, only
I had headphones on. Likewise I don't remember the exact circumstance. I do
remember getting yelled at by the XYL in the next room, however. And I was
never even in the Navy.
--- On Wed, 4/8/09, Steve Ellington
I can almost guarantee this is going to be another one of those, "My radio
doesn't act like that threads."
The reason being, this phenomenon is level sensitive. With a weak signal the
noise reduction lowers the signal strength but above a certain level, it
increases the signal dramatically.
s, the DSP BW is *not* independent of the i-f filter BW.
Of course it can be argued that the readouts are displaying the audio pass-band
and this is to be expected. But I think this is wrong. Perhaps some of the
reports of lousy audio result from this mistake.
Wes Stewart, N7WS
--- On
There is a lesson here: before making any pronouncements, check Jack's website
for the test results first.
--- On Tue, 4/7/09, Jack Smith wrote:
> From: Jack Smith
> Subject: Re: [Elecraft] Fw: Inductive relay "kick"
> To: "Bill Coleman"
> Cc: elecraft@mailman.qth.net, "WCØV"
> Date: Tues
There was some earlier discussion about LED lighting and I thought this article
might be "illuminating".
http://electronicdesign.com/Articles/ArticleID/20825/20825.html
Wes Stewart N7S
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that it's complicated and inexact, so
"nearly" seems to be the best that I've seem. The "Shift" control setting does
affect the beat note. This is generally inaudible, but on some frequencies,
I've heard it by ear. This is true in CW too, so Method 2 carr
--- On Sun, 4/5/09, Steve Ellington wrote:
> The exception proves the rule.
And what's that supposed to mean?
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--- On Sun, 4/5/09, Steve Ellington wrote:
> From: Steve Ellington
> Subject: Re: [Elecraft] My K3's hissy and noisy audio
> To: ev...@pa2kw.com, "'Maarten van Rossum'" ,
> "'Elecraft Group'"
> Cc: "'Gary Surrency'"
> Date: Sunday, April 5, 2009, 11:47 AM
> Those that have complained abou
I'm using a pair of Optimus PRO 7AVs. These work well and the look of the
black, all metal case matches the K3 very nicely.
I have a spare pair for sale for %50.00 shipped CONUS.
Please contact off list if interested.
Wes N7WS
--- On Sat, 4/4/09, r miles wrote:
> From: r miles
> Subject
http://www.vk9gmw.com/index.php?page=photo&shot=Marion_013
No ESD strap.
Wes N7WS
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I was going to suggest an LC filter for non-critical work. If Elecraft would
supply "replacement" carrier boards with the pin sockets either mounted or
available it would be nice.
--- On Thu, 3/26/09, VE3NFK wrote:
> From: VE3NFK
> Subject: Re: [Elecraft] Width of AM filter
> To: elecraft@m
I have to strain to hear the birdie, but the tuning pulses sound like tuning
across a radar. These are actually worse with the preamp off, since the added
noise with it on masks the pulses to some extent. They are of course, worse
with wider bandwidth, since there are more of them to hear at
In playing with the scanning feature I've seen that there is some measure of
squelch even in SSB, in that the receiver scans quietly until it encounters a
signal and then pauses with the audio active for a time and then resumes
scanning.
My magic decoder ring has not pointed me to how the sens
I see in the manual that in "some countries" scanning of some bands isn't
allowed and in some countries six-meter scanning may be disabled.
My radio will not scan six-meters, so I checked the archives and saw that
others have asked about this. Unless I'm mistaken (always a good possibility)
t
Indeed I did. However, a few more words. The experiments that I ran were by
necessity somewhat contrived and weren't very repeatable. What I was
attempting to show was that there can be a detrimental effect when these lines
become moist. Roy Lewallen, W7EL, has also written about this.
The
I remember one in particular, circa 1959. I had been licensed about a year and
needed a tower. My then neighbor and Elmer the late Lee, W7UVR, had a 30'
aluminum one laying in his yard and I asked him to "donate" it to me.
He said that if I helped him install the ground radials under his V80 h
--- On Mon, 3/16/09, Julian, G4ILO wrote:
> From: Julian, G4ILO
> Subject: Re: [Elecraft] K3's RF Clipping Speech Processing
> To: elecraft@mailman.qth.net
> Date: Monday, March 16, 2009, 2:06 AM
> Wes Stewart wrote:
> >
> >
> > Nice job (as always
Nice job (as always). I haven't had a chance to really study it in depth, but
one comment" audio clipping is a viable method too.
Wes N7WS
--- On Sun, 3/15/09, Jack Smith wrote:
> From: Jack Smith
> Subject: [Elecraft] K3's RF Clipping Speech Processing
> To: "'Elecraft'"
> Date: Sunday,
Replace all of the solid state stuff with vacuum tubes.
Some of the ways semiconductors are affected are noted here:
http://www.mse.vt.edu/faculty/hendricks/mse4206/projects97/group02/effects.htm
In some tactical missiles, single events are dealt with with nuclear event
detectors (NED) that sh
--- On Mon, 3/9/09, dw wrote:
> From: dw
> Subject: [Elecraft] Idiom Press CMOS-4 ( emulation of other keyers)
> To: "Elecraft_List"
> Date: Monday, March 9, 2009, 2:14 PM
> Hey All,
>
> The CMOS-4 advertisement indicates that it can emulate
> other keyers.
> I'm guessing that means that i
--- On Thu, 3/5/09, Ron D'Eau Claire wrote:
> From: Ron D'Eau Claire
> Subject: Re: [Elecraft] I think its time for me to apologize to the group.
> To: "'Elecraft_List'"
> Date: Thursday, March 5, 2009, 5:55 PM
> Don wrote:
>
> Point of information - the QRP crowd got me back into the
> ar
Life is too short for QRP
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Pleas
--- On Mon, 3/2/09, Charles wrote:
> From: Charles
> Subject: Re: [Elecraft] To: Elecraft- Suggestions
> To: elecraft@mailman.qth.net
> Date: Monday, March 2, 2009, 11:17 AM
> On Monday 02 March 2009 14:57:08 -.-. --.-N3TU -.-. --.-
> wrote:
> > Is it possible to have the radio go down to .1
That's backwards from my experience. My TS870 has a built in Logikey that
works beautifully.
Even though I've been sending the numeral 7 for over 50 years, with the K3 it
comes out M S when I try to program the CW memories.
--- On Sun, 3/1/09, Jack Colson wrote:
> From: Jack Colson
> Subj
between no modulation and
modulation peaks. I guess I'm old fashioned but I thought that the AM carrier
strength should set the AGC level. This peak-reading AGC may also be a
contributor to the distorted audio that has been widely reported.
Wes Stewart, N7WS
_
Unless you're camped on a salt water beach, use that pole to support an
inverted vee (which can be part of the guy system).
--- On Wed, 2/25/09, Garrett, Russ wrote:
> From: Garrett, Russ
> Subject: Re: [Elecraft] KX-1 what do you use for an antenna when you're in a
> place with no trees to
I have a couple of used 40' fiberglass "hot sticks" that a guy was selling
locally some time ago. They're not backpacking light and even as stout as they
look, they're pretty limber and need some guying. The other downside: they're
bright yellow except the top section which is day-glow green.
--- On Wed, 2/25/09, Bill W5WVO wrote:
This point is brought home all the time here in Albuquerque, where we have to
deal with the radiation from ten or more TV/FM analog transmitters
line-of-sight on top of Sandia Crest. While all these transmitters except
Channel 2 have fundamentals well ab
--- On Tue, 2/17/09, Vic K2VCO wrote:
> Wes Stewart wrote:
>
> > Herb Johnson and Swan were the Eric, Wayne and
> Elecraft of the day.
>
> I hardly think W & E would sell a product designed to
> appeal to CBers operating with illegal power and VFOs!
> Co
>
> And one mustn't forget the various Swan transceivers,
> starting with the
> SW-175, SW-140 and SW-120 made in a garage in Benson,
> Arizona in the
> very early 60's. Then the SW-240 and in 1965 the SW-350
> (and its long
> line of variants) brought SSB and the transceiver concept
> into th
Careful reading of the TenTec ad will show, by what they omit, the problem with
RF clipping: the intermodulation distortion.
If you are not a K3 owner, or have another radio, and are interested in an
add-on device then you might look at Note no. 5 here:
http://k6mhe.com/n7ws/
I sold a couple o
Regards,
Wes
--- On Mon, 2/2/09, Bill W4ZV wrote:
> From: Bill W4ZV
> Subject: Re: [Elecraft] K3 AM reception
> To: elecraft@mailman.qth.net
> Date: Monday, February 2, 2009, 10:01 AM
> Wes Stewart wrote:
> >
> > Following are links to plots that demonstrate some of
>
--- On Sun, 2/1/09, Jim Garland <4cx2...@muohio.edu wrote:
> I've been reading a thread on another email reflector about the K3's audio
> response on AM. One of the reflector participants is a serious SWBC listener
> and is very dissatisfied with his K3's AM audio. He has pointed out a few
> th
--- On Fri, 1/30/09, Ignacy wrote:
> From: Ignacy
> Subject: [Elecraft] Unlisted improvements with 2.80
> To: elecraft@mailman.qth.net
> Date: Friday, January 30, 2009, 8:31 AM
> LO adjustment is now smooth and does not jump from 0.00 to
> 0.20 like before.
Doesn't work that way with my K3.
--- On Wed, 1/28/09, Ian Maude wrote:
> This was what I was saying in my post the other day Don.
If the rig does not have good IMD over 100W and Elecraft say we should not run
it over 100W, why does the radio allow me to turn it up?
> IMHO, the power level on SSB should stop at 100W.
I read the digests, so I won't quote all of the helpful responses I've received
on this topic but will add on here.
Let me restate, the K3 was operated without an antenna and just a 50-ohm
termination on the antenna connector. The only other piece of equipment
operating in the shack was the As
I'm still playing with my new K3 and finally got around to listening on
6-meters. There are so many birdies as to make it unusable.
At first I thought they might be external, and some were generated in my Lenovo
laptop, but shutting it down and terminating the K3 antenna port with a load
doesn
I'm a new owner of a K3 and am still learning its operation. At the moment,
it's not fully incorporated into my station, but is side-by-side with my
Kenwood TS-870 for some comparison/familiarization.
A few minutes ago I was on 80-meter CW listening to JD1BLY working a
mini-pileup. He was bar
Although I continue to await the arrival of my K3, I'm pleased to see the
incorporation of the noise gating feature. I started using something similar
almost 30 years ago.
Shortly after the publication of my article, "Split-band Speech Processor" in
the September 1979 issue of the old Ham Radi
Ron wrote:
> So-called "baluns" that transform impedances are, typically, transformers --
often transmission-line transformers.
There is a type of "choke" balun that is both a balanced-to-unbalanced device
and an impedance transformer at once.
Connecting two ferrite-loaded transmission line bal
Bob W1SRB writes:
>There have been several e-mail threads recently about ferrite
cores and about baluns and transmission line loss with high SWR. Related
to this is a question that I haven't seen addressed anywhere - toroids
all have a specified frequency range but what happens when they're us
--- "Eric Swartz - WA6HHQ, Elecraft"
<[EMAIL PROTECTED]> wrote:
> The K3 firmware used for the original QST review did
> not turn off the
> K3's RF speech compressor clipper even when the
> compressor was set to
> zero for their TX IMD two tone test. This resulted
> in a significant
> increase
Well, I've seeming stirred up a hornets' nest, or as
we have in Southern Arizona, an Africanized ("killer")
honeybees' nest.
I do stand corrected about a response from Elecraft
regarding this subject that I failed to see.
http://www.mail-archive.com/elecraft@mailman.qth.net/msg50667.html
Furthe
d they have to deal with all of the garbage
transmitted by their neighbors. Shouldn't the K3 be a
better, not worse, neighbor than the competition?
So I humbly propose a new transceiver "composite"
test. Receiver performance shall be measured by using
two other like transceiv
I realize that this is off-topic but allow me a few
thoughts about the ongoing G5RV discussion.
I have placed Varney's original paper here:
www.k6mhe.com/n7ws/G5RV.PDF
Reading this will reveal the following:
1. Varney *did* intend to operate the antenna on
multiple bands, although 20-meters was
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